Wire-joint.



No. 64l,853.

Patented Jan. 23 I900. A. GARTNER.

WIRE JOINT.

(Application filed Nov. 27, 1899.)

(No Model.)

ATTORNEY 6 THE uonms vrrzns coy, mow-Lima, WASHINGTON, q t:v

UNITED STATES PATENT OFFICE.

ALFRED GARTNER, OF PATERSON, NEW JERSEY, ASSIGNOR TO CHARLES H. MOINTIRE, OF NEWARK, NEW JERSEY.

WIRE-JOINT.

SPECIFICATION forming part of Letters Patent to. 641,853, dated January 23, 1906.

Application filed November 27; 1899. Serial No- 738,323'- (No model.)

To all whom it may concern.- I

Be it known that I, ALFRED GARTNER, a citizen of the United States, residing in Paterson, in the county of Passaic and State of New Jersey, have invented certain Improvements in Wire-Joints; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference-being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to wire-connectors, commonly known as torsion-joints, and its object is to provide a connector for telephone, telegraph, or other electrical wires of simple, strong, and durable construction, and, further, to secure a more perfect contact and also to reduce the cost of manufacture.

The invention consists in the improved wire connector and in the combination and arrangement of the various parts thereof, sub stantially as will be hereinafter more fully described and finally embodied in the clauses of the claim.

In the accompanying drawings, Figure 1 is a side elevation of my improved connector with the wires inserted; Fig. 2, a view similar to Fig. 1, the joint being completed. Fig. 3 is a side elevation of a completed joint, showing a slight modification; and Figs. 4 and5, respectively, are enlarged sectional views on the lines an 0c of Fig. 2 and y y of Fig. 3.

In said drawings, av represents a connector consisting of two tubes b and c of substan tially equal length, soldered or otherwise secured together. At either end of the device one end of the one tube extends beyond the corresponding end of the other, as shown at b and c. In practice the ends of the wires d and e to be jointed are inserted from opposite directions \into their respective tubes 1) and c and are then twisted together with the tubes substantially into the shape as shown in Figs. 2 and 3.

It is essential that the ends of the wires extend beyond the ends of their respective tubes to about the ends of the other tubes, as clearly shown, and are then bent to bear against said end portions of the other tubes into electrical contact, as illustrated in Fig. 2.

To insure a still more external electrical contact, the end portions of the wires may be 'coiled around the ends of the other tubes, as shown in Fig. 3.

There are a number of torsion-joints on the market at the present time, and I may refer to the following United States Letters Patents which cover the said joints or connectors: Nos. 347,625, 451,933, 541,998, 535,592, 557,690, 561,438, 569,713, 569,752, 569,753, and 635,007.

It is essential in a wire-joint to have a large bearing-surface for the wires to be united and to not confine said bearing=surface to the interior of the tube or tubes.

The joints covered by the patents above referred to to a certain extent answer the requirements of a perfect connector and give as large a bearing-surface as is possible to obtain by means of their respective constructions. However, none of said connectors has besides the internal bearing-surface an external bearing-surface, and this is one ofthe novel features of the present invention, and the advantages thus obtained Will be readily understood by practical men and those familiar with the art.

Having'thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A connector for electric wires, consisting of two metal tubes lengthwise secured together, one end of the one tube extending beyond the corresponding end of the other, said tubes being adapted to receive the wires from opposite directions and to be twisted together with said wires, substantially as shown and described.

2. Aconnector for electric wires, consisting of two metal tubes-lengthwise secured together, one end of the one tube extending beyond the corresponding end of the other, said tubes being adapted to receive and be penetrated by the wires from opposite directions, and to be twisted together with said wires, the end portion of each wire extending through and beyond its respective tube and is in conand beyond its respective tube and is coiled around the end portion of the other tube, substantially as and for the purposes described.

In testimony that I claim the foregoing I 15 have hereunto set my hand this 28th day of October, 1899.

r ALFRED GARTNER. Witnesses JAMES B. NEWTON, MARGARET BRITTON 

